Wrench-locking device.



E. H. IVESON.

WRENCH LOCKING DEVICE.

APPLICATION HLED DEC. 6. 1915.

Patented Apr. 11, 1916.

Qwvzptoz BEL awn EDWARD H. IVESON, OF COI-IOES, NEW YORK.

WRENCH-LOCKING DEVICE.

Specification of Letters Patent.

, Patented Apr. 11, 1916.

Application filed December 6, 1915. Serial No. 65,314.

To all whom it may concern:

Be it known that I, EDWARD I-I. IvEsoN, a citizen of the United States, residing at Cohoes, in the county of Albany, State of New York, have invented certain new and useful Improvements in rench-Locking Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in wrench locking devices and is in the nature of an improvement on the device shown in my Patent No. 1,018,321 of February 20, 1912. An object of the invention resides in the provision of a locking device which may be readily attached to wrenches of various types and which includes means for engaging the adjusting nut of the movable jaw of the wrench to prevent its rotation.

A further object of the invention resides in so constructing the device that the operator may readily manipulate the same with one hand to cause it to grip the nut or to release it therefrom. 8

A still further object of the invention resides in so constructing the device that it may be readily attached to a wrench without necessitating the changing of the construction thereof.

With these and other objects in view, such as will appear as my description progresses, my invention comprises the combination and arrangement of parts as set forth in and falling within the scope of the appended claim.

In the drawing: Figure 1 is a side elevation of a wrench showing my improved lock applied thereto and in such position that the movable jaw will be locked; Fig. 2 is a fragmental detail showing the lock in such position that the movable jaw will be free to move; Fig. 3 is a sectional view on line 3-3 of Fig. 1 showing the manner in which the lock cooperates with the nut, and Fig. 4: is a perspective view of the lock detached.

Referring to the drawing by reference characters wherein like parts are indicated by like characters throughoutthe several views: In the drawing, I have illustrated a wrench of the ordinary type which includes a movable jaw 10 which is mounted on a shank 11, on which shank is a stationary copies at this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

jaw 12. A handle 13 is provided on one end of the shank as is also a bearing lug 14. An adjusting screw 15 is rotatably mounted in this lug and extends into the movable jaw in the usual manner. This screw is provided with a thumb nut 16 by means of which the screw may be rotated to move the jaw 10. In order that this screw may be prevented from rotating so that the movable jaw will be maintained in its various adjusted positions, I have provided a lock which is substantially of U-formation having its legs 17 pivoted to the bearing lug 14, at 18 and having its bight portion '19 extending in angular relation to the leg. This bight portion is provided with a finger piece 20. This look as before stated is pivoted at 18 and the legs are adapted to extend tothe sides of the thumb nut 16 while the bight portion 19 is adapted to engage the said nut. The lock is made of resilient material so that when it is forced upon the nut it will clamp the same and prevent it from moving.

It is to be noted that, as shown in Fig. 2

of the drawing, the lock may be swung about its pivot to lie in contact with the handle during the adjustment of the movable jaw. It is to be further noted that the lock may be pushed into its locking position readily by the operator by means of the thumb of the hand in which the handle of the wrench is held and that the lock may be withdrawn from its locking position in the same manner without necessitating the removal of the wrench from the hand or the use of the other hand. The particular location and construction of this lock is advantageous in thatiit permits the lock to be readily operated and in that the lock will positively maintain the jaw in its adjusted positions.

What I claim is The combination with a wrench, of a looking member pivoted thereto, the said mem her being substantially U-shape in formation and having its legs disposed to the.

sides of the adjusting nut of the wrench and its bight portion adapted to resiliently clamp the said nut.

In testimony whereof, I aflix my signature, in the presence of two witnesses.

' EDWARD H. IVESON. Witnesses:

STANLEY H. KLING, ELLA HOCHSTRASSER.

Washington, D. G. 

